12773888 has 40 divisors (see below), whose sum is σ = 26004660. Its totient is φ = 6266880.

The previous prime is 12773879. The next prime is 12773911. The reversal of 12773888 is 88837721.

It can be written as a sum of positive squares in 2 ways, for example, as 12730624 + 43264 = 3568^2 + 208^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31028 + ... + 31436.

Almost surely, 2^12773888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12773888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13002330).

12773888 is an abundant number, since it is smaller than the sum of its proper divisors (13230772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12773888 is an frugal number, since it uses more digits than its factorization.

12773888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 472 counting only the distinct ones).

The product of its digits is 150528, while the sum is 44.

The square root of 12773888 is about 3574.0576380355. The cubic root of 12773888 is about 233.7622442041.

The spelling of 12773888 in words is "twelve million, seven hundred seventy-three thousand, eight hundred eighty-eight".